/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
package org.apache.linkis.common.utils

import java.io.File
import java.util.concurrent.TimeUnit

import org.apache.linkis.common.conf.Configuration
import org.apache.commons.io.FileUtils


object RefreshUtils {

  def registerFileRefresh(period: Long, file: String, deal: java.util.List[String] => Unit): Unit = {
    Utils.defaultScheduler.scheduleAtFixedRate(new Runnable {
      val f = new File(file)
      var fileModifiedTime = if(f.exists()) f.lastModified() else 0
      override def run(): Unit = {
        if(!f.exists()) return
        if(f.lastModified() > fileModifiedTime) {
          deal(FileUtils.readLines(f, Configuration.BDP_ENCODING.getValue))
          fileModifiedTime = f.lastModified()
        }
      }
    }, period, period, TimeUnit.MILLISECONDS)
  }

}
abstract class Deal {
  def deal(line: String): Unit
}
